Car-buffing mechanism.



Patented July 2, 1915.`

2 SHEETSv-SHEET 1.

i j@ TTORNE YS.

J. F. OCONNOR.

CAR BUFFING MECHANISM.

APPLICATION FILED FEB. 28. 1914.

I. F. OCONNOR.

CAR BUFFING MECHANlsM.

APPLICATION FILED FEB. 28. 1914.

'Patented July 27, 1915..

2 SHEETS-SHEET 2.

all i VEN TOR@ nennen seitens JGHN F. OCUNNOlt, F CHCAGO, ILLENOES, ASSEGNB, T@ WXLLAEE E. EINER, @E

' CHECAGO, ELLXNGS.

CAR-BUFFING' MECHANSM.

Application led. February 2&3, will.

T0 aZZ whom it may concern:

Be it known that ll, JOHN F. CQNNOR, a citizen of the United States, residing in Chicago, in the county of Cook and State ot illinois, have invented a new and useful lm-y provement in Car-Bulling Mechanism, o which the following is a specification.

rllhis invention relates to improvements in car boiling mechanism.

rl`he object of the invention is to provide a car bulling mechanism of high capacity and having both a preliminary spring action and a combined spring and friction final action.

rlhe invention furthermore consists in the improvements in the parts and devices and in the novel combination ot' the parts and devices herein shown, described or claimed.

ln the drawing forming a part of this specification, Figure 1 is a horizontal, sectional view showing one form of mechanism embodying my improvements, the friction shell being shown in plan. Fig. 2 is a vertical section taken substantially on the line 2 2 of Fig. l. Fig. 3 is a view similar to Fig. l but showing the preliminary springs trulliv compressed at the end of the preliminary action'ot the mechanism, and Fig. 4lis a view similar to 8 but showing the final position of? the parts.

ln said drawing, the huilen mechanism is shown as comprising castings l0, l() united' by horizontal upper and lower plates li and l2. Fach of the castings l0 is provided with a rear stop lil against which the rear end of the combined friction shell and spring 'asing` il ahuts and is prevented from rearward movement, forward movement ot said shell being prevented by shoulders also formed integral with said. castings. fis clearly appears from Figs.. l and 2, the castings l() are each provided with an elongated opening 35 on the side thereof and the casing il is also provided with openings 36- on its sides whereby the. assembling or sembling oi? the parts, particularly springs, Ais facilitated. Forward o the shoulders 15.. the castings are provided with inwai'dljv inclined friction surfaces Il@ iront stops l?. 'ihe combined 'friction shell and spring lasingl-lhas a cylindrical Zinio tion shell portion i8 at its forward enel within which aie mounted a plurality et oircularly arranged friction shoes l@ with which cooperates a wedge or splende? 2Q,

Specncation of Letters Patent.

Patented Jolly 27, i915,

semi no. seines.

movement of the friction shoes and Wedge being resisted by parallelly arranged springs 2l, (see Fig. 2). Seated against the Wedge is another wedge 22 having inclined end faces 23 with which cooperate triangula'rly shaped wedges 24e, each et which has faces in engagement with the friction surfaces 16, the ends of the Wedge, 22 and the rear face of a follower 25 formed integral with a spring casing 26, the latter being telescoped with another spring easing 27.4 rllhe casings 26 and 27 have mounted therewith a paii` of nested springs 28 and are prevented from separation by a holt 29 arranged as shown. The spring casings 26 and 2i' are normally separated to the extent indicated in Fig. l, but when the casing' is moved inwardly ley the buffer stem indicated in dotted lines at 30, the nested springs .28 are compressed until the shoulder 31 on the casing 2i engages the end ot' shonlder 32 on the casing 26, as shovvn in Figs. 3 and 4, thusy preventing over-compression or setting of the preliminary compression springs. After the casings 26 and 2l' are telescoped to the extent shown in Fig.' 3, the follower 25 then moves the triangularshaped Wedges 24 rearwardly and the latter will st the same time oe moved inwardly es they slide along the inclined friction siiiifaces i6. xThe' combined longitudinal and lateral movement ot the wedges 2st causes the wedge 22 to move longitudinally parallel with the center line ot the oniiing inechanisin, thus forcing the wedge or spreader inwardly and hringing the friction shoes and Jfriction shell into operation. @n account of the arrangement ot wedges 24 and 2Q, being as shown, the wedge 22 will he moved substantially twice as much as the follower 25 is moved, thus multiplying the efeetive resistance of the friction shock alosorhing devices.

Frein the preceding desciiptionit will he seen that the hailing mechanism which l' einely high capacity yet the same gives a preliminary light spring action and a multiplied fric e action oiigh l have herein shown and described what noviv consider the pieten d mliodiinent o my improvements, yet will stood verious changes ons may made withoutdepart the spirit oi the invention, and all such changes and modifications'are contemplated as come within the scope of the claims appended hereto.

Il claim l, ir car bufling mechanism including, in combination: side kcastings having rear stops, front stops and inclined friction walls intel'- mediate said stops; a combined friction ,l

shell and spring casing having its rearend abutting said rear stops; friction shoes and a spreader therefor coperable with the friction shell; telescoped casings, one of which is provided with a follower normally engaging said front stops; a preliminary compression spring mounted within said casings; and a plurality of wedges interposed between said' follower and the wedge of the friction device, some of said wedges engaging said inclined surfaces of the side castings, substantially as specified'.

2. A car buiiing mechanism including, in

combination: side castings having rear and` front stops for a friction shell and casing, said castingsy having also inclined friction surfaces in front of said front stops; a combined friction shell and spring casing separate from, and rigidly mounted between, the side castings and engaging said stops at its rear and front ends; a friction device maare@ and springs within said shell and casing; a preliminary compression spring; and Wedges interposed between said preliminary spring and said friction device, some of said wedges slidably and frictionally engaging said inclined friction surfaces, substantially as specified.

3. car buiiing mechanism including, in combination: a pair of side castings rigidly united by horizontal upper and lower plates and having front and rear stops therein, said side castings having also openings in the sides thereof near the rear end; a combined friction shell and spring casing mounted within said castings and engaging said stops, said casing being open on the sides opposite said openings in the side castings; friction devices mounted within said shell; springs within said casing; and means for operating said friction devices, substantially as specified.

Signed at Chicago, illinois, this'QGth day of February, 1914, in the presence of two subscribing witnesses.

JOHN F.- OCONNR.

l/Vitnesses:

WrLLIAisr A. Gerona, JOSEPH HARRIS. 

